Brown, Herbert C. published the artcileEnantiomeric Z- and E-crotyldiisopinocampheylboranes. Synthesis in high optical purity of all four possible stereoisomers of β-methylhomoallyl alcohols, Recommanded Product: (+)-B-Methoxydiisopinocampheylborane, the publication is Journal of the American Chemical Society (1986), 108(2), 293-4, database is CAplus.
Enantiomerically pure Z-crotyldiisopinocampheylboranes are prepared from B-methoxydiisopinocampheylboranes and the allylic organopotassium compound from cis-2-butene. These enantiomeric Z-crotylboranes add to AcH regioselectively and stereoselectively to give erythro-(+)- and -(-)-3-methyl-4-penten-2-ols in ≥99% diastereoselectivities and ≥95% enantioselectivities. Similarly, enantiomeric E-crotyldiisopinocampheylboranes are prepared and add to AcH to give threo-(+)- and -(-)-3-methyl-4-penten-2-ols in ≥99% diastereoselectivities and ≥95% enantioselectivities.
Journal of the American Chemical Society published new progress about 99438-28-5. 99438-28-5 belongs to ethers-buliding-blocks, auxiliary class Chiral,Aliphatic cyclic hydrocarbon, name is (+)-B-Methoxydiisopinocampheylborane, and the molecular formula is C21H37BO, Recommanded Product: (+)-B-Methoxydiisopinocampheylborane.
Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem